Although some dealers may tell you they have unheated stones, it is best to take this with a pinch of salt. The accepted wisdom is that all Tanzanite is heated. Unheated the stone is a brownish colour and only after heating does it go blue/violet. Some crystals have admittedly been heated in the ground and are already blue but will generally be heated again anyway as the color always improves further. Stones are heated at 600 degrees celcius in a gemological oven for a short time. Further information is available at <a href=http://www.lapigems.com/tanzanite.asp</a>
Tanzanite quartz, according to Crystal Age.com, is an artificially created stone that reflects intense energy. Tanzanite aura quartz is made from quartz that has went through a special process. In this process, indium, gold or niobium is used to bind with the quartz and the resulting crystals exhibit a tanzanite appearance.
It has to do with the colour, the clarity, the faceting, if you can see all the way through the Tanzanite, chances are, it is not real
The largest cut tanzanite in the world is the Ophir Tanzanite. The Ophir Tanzanite weighs 508.06 carats and has been recognized by GUINNESS WORLD RECORDS™ as the largest cut tanzanite in the world. The Ophir Tanzanite is owned by Ophir Collection, LLC.
tanzanite is used for making jewellry
Tanzanite are blue to purple colored silica. In natural form it is reddish on heat treatment it becomes a mixture of blue hues with violet and sometimes burgundy. In different lighting effects it appears different.
The gem mineral tanzanite would be classified as precious.
No, "tanzanite" is a trade name for the mineral zoisite, no relation to diamond.
It's just a name assigned to this color stone from Jewelry Television (JTV) with their trademark on it. They used to call it green tanzanite and claimed that it was a cross between tsavorite and tanzanite and now they are saying that they don't know what causes this color. Their are green tanzanites and even pink tanzanites but JTV calls them all ocean tanzanite.
Tanzanite is found in an area where there are no diamonds. Natural tanzanite is endemic only to the Mererani Hills of Northern Tanzania.
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